* Improve dark mode
- Switch from `slate` to `zinc` for the gray color palette
- Darken overall dark mode UI
- Switch from `green` to `emerald` for the green color palette
- Update a few previously missed instances of title case to sentence case
- Consolidate button styles and change naming from `bright` to `secondary`
- Update button disabled styles
- Fix tooltip not adjusting to content width
- Update graph tooltip layout and typography
- Add transition effects to hover states
- Reduce footer logo size
* Fix oversights
- Update funnel graph colors
- Update graph grid colors
- Improve focus styles
- Improve disabled input styles
* Fix more oversights in relation to dashboard filtering
- Improve consistency of input, button, combobox and modal components in relation to settings area
- Fix segment tooltip color
* Fix search input style in funnel and segments dropdowns
* Add white background to favicon images in dark mode
- The GitHub and ChatGPT favicons are hard to see in dark mode, so we add a white background to them.
* Fix tooltip color to fit all backgrounds in dark mode
* Fix tests
* Fixed more tests
* Extract SourceFavicon component to eliminate favicon duplication
* Fix regression on installation page after rebase
* Fix formatting issues
* Fix favicon test failure in CI by reading placeholder icon at compile time
* Undo previous commit
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